Taipei, Sept. 11 (CNA) A tropical storm that formed near the Philippines could pose a threat to Taiwan, with rainfall from its outer rim expected over the weekend, the Central Weather Bureau said Tuesday.
As of 10 a.m., Tropical Storm Sanba was centered 1,980 kilometers southeast of Taiwan's southernmost tip of Eluanbi, moving in a north-northwesterly direction at a speed of 13 km per hour.
Sanba is packing maximum sustained winds of 65 kph and gusts reaching 90 kph, the bureau said.
If Sanba maintains its current course, it will likely move close to Taiwan on Sunday, bringing unstable weather to the island.
Since Taiwan could also be affected by seasonal winds from the northeast at that time, significant rainfall is expected for the northeastern part of the island, the bureau said.
"Storms that form after the beginning of September are notorious for their unpredictability because there are more seasonal variables compared with summer," said forecaster Lin Ting-yi.
Sanba, named by Macau as a place name, is the 16th storm of the 2012 Pacific typhoon season and the first to take shape in September.
(By Lee Hsin-Yin)